SHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To reduce power consumption in a shift control device of an automatic transmission.SOLUTION: A torque converter 12 includes an actuator operating the lock-up clutch. Each of a continuously variable transmission 14 and an auxiliary transmission 16 includes an actuator generating a shift operation. A hydraulic supply mechanism 24 supplies hydraulic pressure controlled for each actuator by solenoid valves 24a to g incorporated therein to each actuator. A shift control device 30 includes a CPU 32 and each drive circuit 34a to g driving each of the solenoid valves 24a to g, and further includes each switch 36a to g between a battery power supply Vbat and each drive circuit 34a to g. The CPU 32 performing shift control processing by outputting a control signal to each drive circuit 34a to g on the basis of a vehicle signal individually turns on/off each switch 36a to g according to a driving state of a vehicle so as to supply/cut off the battery power supply Vbat.